Learn

Friday, 9 October

NEET UG 2021 · Chemistry · Question 59

NEET 2021 Chemistry, question 59

Question 59 of the NEET 2021 paper (code O1) is a Chemistry question from Coordination Compounds. Its idea, EDTA Structure and Denticity, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q59 · Chemistry

Ethylene diaminetetraacetate (EDTA) ion is :

  1. 1Bidentate ligand with two “N” donor atoms
  2. 2Tridentate ligand with three “N” donor atoms
  3. 3Hexadentate ligand with four “O” and two “N” donor atomsOfficial answer
  4. 4Unidentate ligand

Official answer: option 3 · NTA final answer key

Same idea

The only question on EDTA Structure and Denticity

No other NEET paper from 2017–2026 tested this exact idea.

EDTA Structure and Denticity: every question and how it was framed

The chapter

Coordination Compounds in ten years of NEET

27 questions from 2017–2026, asked in 10 of 10 papers, about 2.6 a paper. Coordination Compounds alone had 13.

Coordination Compounds: questions per paper

0364’173’181’191’202’212’222’233’243’256’26